<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="./index.css">
</head>
<body>

<!--    1.块级元素-->
<div class="box">wewewewe</div>
<div class="box">wewewewe</div>


<!--    2.行内元素-->
<span>122</span>
<span>233</span>
<span>344</span>
<span>455</span>


</body>
</html>